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dm thin: use bool rather than unsigned for flags in structures

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Also, move 'err' member in dm_thin_new_mapping structure to eliminate 4
byte hole (reduces size from 88 bytes to 80).

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Acked-by: Joe Thornber <ejt@redhat.com>
This commit is contained in:
Mike Snitzer 2013-12-17 13:43:31 -05:00
parent 10343180f5
commit 7f21466512
2 changed files with 12 additions and 12 deletions
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2
drivers/md/dm-thin-metadata.h
View File

@ -131,7 +131,7 @@ dm_thin_id dm_thin_dev_id(struct dm_thin_device *td);
struct dm_thin_lookup_result {
dm_block_t block;
unsigned shared:1;
bool shared:1;
};
/*

22
drivers/md/dm-thin.c
View File

@ -509,16 +509,16 @@ static void remap_and_issue(struct thin_c *tc, struct bio *bio,
struct dm_thin_new_mapping {
struct list_head list;
unsigned quiesced:1;
unsigned prepared:1;
unsigned pass_discard:1;
unsigned definitely_not_shared:1;
bool quiesced:1;
bool prepared:1;
bool pass_discard:1;
bool definitely_not_shared:1;
int err;
struct thin_c *tc;
dm_block_t virt_block;
dm_block_t data_block;
struct dm_bio_prison_cell *cell, *cell2;
int err;
/*
* If the bio covers the whole area of a block then we can avoid
@ -549,7 +549,7 @@ static void copy_complete(int read_err, unsigned long write_err, void *context)
m->err = read_err || write_err ? -EIO : 0;
spin_lock_irqsave(&pool->lock, flags);
m->prepared = 1;
m->prepared = true;
__maybe_add_mapping(m);
spin_unlock_irqrestore(&pool->lock, flags);
}
@ -564,7 +564,7 @@ static void overwrite_endio(struct bio *bio, int err)
m->err = err;
spin_lock_irqsave(&pool->lock, flags);
m->prepared = 1;
m->prepared = true;
__maybe_add_mapping(m);
spin_unlock_irqrestore(&pool->lock, flags);
}
@ -788,7 +788,7 @@ static void schedule_copy(struct thin_c *tc, dm_block_t virt_block,
m->cell = cell;
if (!dm_deferred_set_add_work(pool->shared_read_ds, &m->list))
m->quiesced = 1;
m->quiesced = true;
/*
* IO to pool_dev remaps to the pool target's data_dev.
@ -848,8 +848,8 @@ static void schedule_zero(struct thin_c *tc, dm_block_t virt_block,
struct pool *pool = tc->pool;
struct dm_thin_new_mapping *m = get_next_mapping(pool);
m->quiesced = 1;
m->prepared = 0;
m->quiesced = true;
m->prepared = false;
m->tc = tc;
m->virt_block = virt_block;
m->data_block = data_block;
@ -2904,7 +2904,7 @@ static int thin_endio(struct dm_target *ti, struct bio *bio, int err)
spin_lock_irqsave(&pool->lock, flags);
list_for_each_entry_safe(m, tmp, &work, list) {
list_del(&m->list);
m->quiesced = 1;
m->quiesced = true;
__maybe_add_mapping(m);
}
spin_unlock_irqrestore(&pool->lock, flags);